Limitations of stroke volume estimation by non-invasive blood pressure monitoring in hypergravity

PloS One
Olivier ManenStéphanie Montmerle-Borgdorff

Abstract

Altitude and gravity changes during aeromedical evacuations induce exacerbated cardiovascular responses in unstable patients. Non-invasive cardiac output monitoring is difficult to perform in this environment with limited access to the patient. We evaluated the feasibility and accuracy of stroke volume estimation by finger photoplethysmography (SVp) in hypergravity. Finger arterial blood pressure (ABP) waveforms were recorded continuously in ten healthy subjects before, during and after exposure to +Gz accelerations in a human centrifuge. The protocol consisted of a 2-min and 8-min exposure up to +4 Gz. SVp was computed from ABP using Liljestrand, systolic area, and Windkessel algorithms, and compared with reference values measured by echocardiography (SVe) before and after the centrifuge runs. The ABP signal could be used in 83.3% of cases. After calibration with echocardiography, SVp changes did not differ from SVe and values were linearly correlated (p<0.001). The three algorithms gave comparable SVp. Reproducibility between SVp and SVe was the best with the systolic area algorithm (limits of agreement -20.5 and +38.3 ml). Non-invasive ABP photoplethysmographic monitoring is an interesting technique to estimate relative stro...Continue Reading

References

Mar 15, 2001·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·V A Convertino
Jun 10, 2003·Journal of Applied Physiology·M RohdinD Linnarsson
Jul 10, 2003·European Journal of Applied Physiology·Johannes J van LieshoutKarel H Wesseling
Jul 16, 2003·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Colette FierensLinda M Thienpont
Dec 16, 2003·Clinical Science·Marjorie S PittRoger Hainsworth
Apr 2, 2005·Experimental Physiology·Lysander W J Bogert, Johannes J van Lieshout
Apr 9, 2005·European Journal of Applied Physiology·Stéphanie Montmerle, Dag Linnarsson
Jan 19, 2007·The New England Journal of Medicine·Peter G TeichmanRaphael J Kot
Feb 3, 2007·Eighteenth Century Life·Alexandra Cook
Mar 14, 2007·Blood Pressure Monitoring·Marcos D PolitoAntonio C L Nobrega
Apr 20, 2007·The New England Journal of Medicine·Shin-Han TsaiWen-Ta Chiu
Jun 14, 2008·Journal of Hypertension·Ilja GuelenWillem Jan W Bos
Dec 30, 2008·Critical Care Medicine·James X SunRoger G Mark
Apr 10, 2009·European Journal of Applied Physiology·Uwe HoffmannDag Linnarsson
Jul 14, 2009·Critical Care : the Official Journal of the Critical Care Forum·Maurizio Cecconi, Andrew Rhodes
Oct 28, 2009·Biomedical Engineering Online·Meir NitzanAbraham T Weiss
May 1, 2010·International Journal of Sports Medicine·R S GomidesC L de Moraes Forjaz
Jul 14, 2010·American Journal of Physiology. Heart and Circulatory Physiology·Ramakrishna Mukkamala, Da Xu
Feb 3, 2011·British Journal of Clinical Pharmacology·Bart F GeertsJos R Jansen
May 11, 2011·European Journal of Echocardiography : the Journal of the Working Group on Echocardiography of the European Society of Cardiology·Maurizio GalderisiUNKNOWN European Association of Echocardiography
Jun 15, 2012·Journal of Clinical Monitoring and Computing·Jasper TruijenBerend E Westerhof
Mar 21, 2013·The Journal of Trauma and Acute Care Surgery·Clément DubostSébastien Coste
May 22, 2013·The American Journal of Emergency Medicine·Yuri van der DoesStephanie C E Schuit
Nov 28, 2013·Aviation, Space, and Environmental Medicine·Tatsuya AraiLuis Beck

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Citations

Feb 11, 2020·Frontiers in Physiology·Brooke C D Hockin, Victoria E Claydon
Nov 30, 2018·Frontiers in Physiology·Ana Diaz-ArtilesLaurence R Young
Aug 28, 2021·International Journal of Environmental Research and Public Health·Kwo-Tsao ChiangChung-Yu Lai

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